This is wild. When cameras try to capture guitar strings being played, they see wavelength-type movements from each string because of the camera’s rolling shutter effect. But it can only be seen on ...

There are pages of explanations about what you're seeing here, but first just watch this. Obviously, it's a camera looking at the strings of a guitar from inside of the sound hole. The illusion is ...

Magnets keep strings suspended without anchor points, and pushing a magnet piece bends notes, so you get expressive sounds with simple moves.